USGS Color Topographic Maps of New Jersey (1:100,000)

NJ Office of Information Technology (NJOIT), Office of Geographic Information Systems (OGIS)

Data Source


This Web Map Service (WMS) layer serves a seamless copy of color topographic base map (1:100,000 scale) raster graphic images. Data in the WMS were derived from county-wide images published by the NJ Geological Survey in NAD83 NJ State Plane feet coordinates. NJGS derived those images from Digital Raster Graphic files of 60 minute by 30 minute quadrangles, published by the US Geological Survey. Source images are 12-color, 250 DPI. Source map dates are 1982 – 1986.


Source data from US Geological Survey and NJ Geological Survey

Horizontal Position Accuracy

Creator of the NJGS product states that the product meets National Map Accuracy Standards for 1:100,000 scale maps (not more than 10% of the points tested shall be in error more than 166.67 feet), with the following warning:”The accuracy check for the set of images is based solely on comparing locations of 7-1/2 minute ticks on the images to those from the NJDEP 7-1/2′ tile coverage (quads86). The location of the county boundaries on the images often depart from the location of their vectorized equavalents (taken from stcoq). The sources for, and nature of, this misalignment are unknown, but misalignment is most pronounced along rivers and streams, and to lesser extents along linear segments of the county boundary. The images are not clipped to the vectorized county boundary. Moreover, the county boundaries showing on the images are preserved in an attempt to optimize alignment of adjacent sets of county images.

Use Constraints

See Purpose and Data Quality sections of the metadata for conditions that limit appropriate uses. Acknowledgement of the service provider, NJ Office of Information Technology (NJOIT), Office of Geographic Information Systems (OGIS), would be appreciated for maps, data or other products derived from this service.

Distribution Liability

The State of New Jersey provides the data set “as is”. The State makes no guarantee or warranty concerning the accuracy of information contained in the data. Also, the State makes no warranty, either expressed or implied, regarding the condition of the product or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. Although these data files have been processed successfully on computers at the State, no warranty is made by the State regarding the use of the data on any other system, nor does the fact of distribution constitute or imply such a warranty.

Map software is provided ‘as-is’, without any express or implied warranty. In no event will be held liable for any damages arising from the use of this software. The user assumes all risks associated with the use of this software. will not be held responsible for any inaccuracies and no responsibility is assumed for damages or other liabilities due to errors, installation, accuracy, availability, use or misuse of the data presented.

Full Metadata Link

Downloadable Version for Offline Use